ALEXANDER VON HTJMBOLDT. 155 CHAPTER X. KOSMOS, AS THE EPITOME OF HUMBOLDX'S SCIENTIFIC MFE. IN speaking of the lectures on physical geography given by Humboldt in the -winter of 1827-28, in the Lecture-room of the University, and in the Large- hall of the Singing Academy of Berlin., we mentioned that he had the intention of publishing these re- nowned lectures in a work called cc Kosmos/' but' that other occurrences forced him to delay its revision and publication. He considered these lectures., delivered before a large miscellaneously educated public, as an easy conclusive means of proving the good or imper- fect connexion of single portions of his theories, and, therefore., he had before coming to Berlin given similar lectures in Paris in the French language. He laid down in unstudied addresses, and without written notes, his conception of science; and how anxious the public were to retain the fugitive words, is evident from the fact that of his capable hearers several took doWn his lectures, and several prepared and published them by zaeans of notes and an excel- lent memory, Htimboldt did not write down what he had then lectured until 1843 and 1844, but how could he have written the same when in the inter- vening time the treasures of observation and ex- perience had so considerably increased, and opinions and theories had been developed by more mature t consideration? But in order to give unity, spirit, and life to his subsequent descriptions, he started from those lectures and the era of science therein.